Research on Multi-Beam Line-Finding Problem Based on Multi-Modal Analysis

Based on the functional principle and implementation method of multi-beam sounding system, this paper establishes a mathematical model to solve the coverage width of multi-beam sounding and the overlap rate between adjacent strips according to geometric relationship and trigonometric function, and uses intelligent optimization algorithms such as genetic algorithm and ant colony algorithm to design the optimal detection scheme in the sea area to be measured. The following conclusions are obtained: (1) It is found that the smaller the depth of seawater is, the lower the overlap rate is. When the distance between the survey line and the center point is 600 meters and 800 meters, it is missed. (2) It is found that when β = 90°, 270 °, β= 45°, 315 ° and β = 135°, 225°, the coverage widths are equal, and the larger the distance between the measuring ship and the center point of the sea area, the larger the coverage width. (3) The angle of the survey line direction is 90°, and the serpentine survey line strategy is adopted from west to east at 270°. The overlap rate is kept at 10%, which completely covers the sea area to be measured. The total length of the final survey line is 125936 m. (4) Taking the shortest path obtained by the particle swarm optimization algorithm in this paper as a reference, the total length of the survey line is calculated to be 344330.1m, the percentage of the missed area is 19.68%, and the total length of the part with an overlap rate of more than 20 % is 58536.1m.